Question

why is lugagge is tied on the roof of the bus with a rope

Answer 1

it's tied for the safety bcz when luggage is tied it's not felt down when bus is jumped..

Answer 2

Answer:

1. The luggage kept on the roof will be in the motion when the bus starts moving.
2. But when brakes are applied the bus stops and comes to rest.
3. Due to inertia the luggage will be still in motion and may fall down to the ground and may be damaged.